Hi Becky,
If the links are justified, don't worry. I have clients with 3-400 and no problems with their positions in Google.
That doesn't mean to say it will be the same case for everyone though - each site is different and sometimes you can have too many, but just think it through and if you come to the conclusion that most of the links aren't needed and are stuffing keywords in, then look to make changes.
But on the whole, it doesn't sound like an issue to me - there are no hard and fast rules around this.
-Andy